added some files that had been left out

[org.ibex.js.git] / src / org / ibex / js / JSNumber.java

diff --git a/src/org/ibex/js/JSNumber.java b/src/org/ibex/js/JSNumber.java
new file mode 100644 (file)
index 0000000..8137cbc
--- /dev/null
+++ b/src/org/ibex/js/JSNumber.java
@@ -0,0 +1,62 @@
+package org.ibex.js;
+
+abstract class JSNumber extends JSPrimitive {
+    boolean jsequals(JS o) {
+        if(o == this) return true;
+        if(o instanceof JSNumber) {
+            JSNumber n = (JSNumber) o;
+            if(this instanceof D || n instanceof D) return n.toDouble() == toDouble();
+            return n.toLong() == toLong();
+        } else if(o instanceof JSString) {
+            String s = ((JSString)o).s.trim();
+            try {
+                if(this instanceof D || s.indexOf('.') != -1) return Double.parseDouble(s) == toDouble();
+                return Long.parseLong(s) == toLong();
+            } catch(NumberFormatException e) {
+                return false;
+            }
+        } else {
+            return false;
+        }
+    }
+    // FEATURE: Better hash function? (if d != (int) d then do something double specific)
+    public int hashCode() { return toInt(); }
+    
+    abstract int toInt();
+    long toLong() { return toInt(); }
+    boolean toBoolean() { return toInt() != 0; }
+    double toDouble() { return toLong(); }
+    float toFloat() { return (float) toDouble(); }
+    
+    final static class I extends JSNumber {
+        final int i;
+        I(int i) { this.i = i; }
+        int toInt() { return i; }
+        public String coerceToString() { return Integer.toString(i); }
+    }
+    
+    final static class L extends JSNumber {
+        private final long l;
+        L(long l) { this.l = l; }
+        int toInt() { return (int) l; }
+        long toLong() { return l; }
+        public String coerceToString() { return Long.toString(l); }
+    }
+    
+    final static class D extends JSNumber {
+        private final double d;
+        D(double d) { this.d = d; }
+        int toInt() { return (int) d; }
+        long toLong() { return (long) d; }
+        double toDouble()  { return d; }
+        boolean toBoolean() { return d == d && d != 0.0; }
+        public String coerceToString() { return d == (long) d ? Long.toString((long)d) : Double.toString(d); }
+    }
+    
+    final static class B extends JSNumber {
+        private final boolean b;
+        B(boolean b) { this.b = b; }
+        int toInt() { return b ? 1 : 0; }
+        public String coerceToString() { return b ? "true" : "false"; }
+    }
+}